Here is a tips for securing your email id from spammers. The email id if posted in public forums as a plain text is prone to SPAM attacks. This is because there are lots of robots softwares running across the internet which scans for email ids.
To avoid exposing your email address on your WWW pages, we can convert it to an image format. And post this resulting image on to different forums.
Try this recipe, executed on Linux command shell
pbmtext -builtin fixed firstname.lastname@example.org | pnmcrop | ppmtogif > email.gif
The resulting image is in email.gif file, which can be posted as an image signature/avatar in various discussion forums.